diff --git a/hosts/modules/desktop.nix b/hosts/modules/desktop.nix
index e3252c8..5003bc8 100644
--- a/hosts/modules/desktop.nix
+++ b/hosts/modules/desktop.nix
@@ -1,5 +1,10 @@
 { config, pkgs, inputs, ... }:
 {
+  # Memtest86 for both bootloaders — case uses systemd-boot, count uses GRUB,
+  # so both are set here; each is a no-op when its bootloader isn't active.
+  boot.loader.grub.memtest86.enable = true;
+  boot.loader.systemd-boot.memtest86.enable = true;
+
   # Enable the X11 windowing system.
   services.xserver = {
     enable = true;